Check out GTDebuggerVariablesBrowser. That’s the browser used in the debugger 
to display and inspect variables.

> On 21 Feb 2016, at 09:35, Ben Coman <[email protected]> wrote:
> 
> With...
>    Error subclass: #OwnedLockBadRelease
>        instanceVariableNames: 'lockOwner perpetrator'
>        classVariableNames: ''
>        package: 'Kernel-Processes'
> 
> In playground when I do...
>    | error |
>    (error := OwnedLockBadRelease new) signal
> then in the debugger select the 'error' tempvar,
> the [Raw] tab is too busy, so I'd like a custom [Error] tab
> showing only my two instance variables.
> 
> I've managed to get a tab to show up by implementing...
>    OwnedLockBadRelease>>gtDebuggerEvaluatorIn: composite
>        super gtDebuggerEvaluatorIn: composite.
>        (GTObjectVariablesBrowser new evaluatorIn: composite)
>        title: 'Error Tab To Do'
> but I can't find how to add variables.
> 
> Tips please?
> cheers -ben
> 


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